New process for machining cylinder sleeve of slurry pump

Abstract

The invention discloses a new method for machining a cylinder sleeve of a slurry pump. The new method comprises the following steps of according to the drawing size of the slurry pump, determining the size and material of an outer sleeve blank, determining the size and material of a seamless steel tube, designing a combined stamping die, and stamping the seamless steel tube into a hollow cylinder with steps by using a forging bed; taking a tube drawing continuously cast blank as an inner sleeve so as to ensure a small working allowance; roughly machining and semi-finishing the inner sleeve and the outer sleeve; performing quenching and low temperature tempering on the inner sleeve, performing fixed-position machining on an excircle to make the excircle have the baking required size; performing finish machining on an inner hole of the outer sleeve to make the inner hole have the baking required size; heating and assembling an inner sleeve semi-finished product and an outer sleeve semi-finished product to obtain an integrated assembly; performing fixed-position machining on an inner circle and the excircle of the assembly to make the inner circle and the excircle have the drawing size; and spraying a paint, packing and warehousing. The new method disclosed by the invention has the beneficial effects that the material loss is reduced, the production efficiency of cylinder sleeve blanks is improved, and the consistence of products is better than that of cast products.

Description

technical field [0001] The invention relates to a processing method for sleeves, which is suitable for processing composite sleeves such as mud pump cylinder sleeves. Background technique [0002] At present, manufacturers of mud pumps use semi-finishing of the outer casing and inner casing respectively, and then heat-drying combination for finishing, while the inner and outer casing blanks are mostly cast. Its processing technology has the following disadvantages: [0003] 1. Intermediate frequency electric furnace is required for casting the jacket blank. The jacket material is structural steel, and the electric furnace lining is made of alkaline furnace lining; while the inner jacket is made of high chromium cast iron, and the electric furnace lining is made of acidic furnace lining. Since the electric furnace lining is different, the molten iron of the jacket and inner jacket It cannot be smelted at the same time; the size of the mud pump is different, and the jacket bl...

AI Technical Summary

Problems solved by technology

[0003] 1. Intermediate frequency electric furnace is required for casting the jacket blank. The jacket material is structural steel, and the electric furnace lining is made of alkaline furnace lining; while the inner jacket is made of high chromium cast iron, and the electric furnace lining is made of acidic furnace lining. Since the electric furnace lining is different, the molten iron of the jacket and inner jacket Can not be smelted at the same time; the size of the mud pump is not the same, the jacket blank is not the same, so different metal molds are required for casting

[0004] 2. The machining allowance of inner and outer jacket blanks is large, the process route is long, and the production cost is high